Instantaneous Low Temperature Gelation by a Multicomponent Organogelator Liquid System Based on Ammonium Salts

2008 ◽  
Vol 130 (25) ◽  
pp. 7967-7973 ◽  
Author(s):  
Daniel García Velázquez ◽  
David Díaz Díaz ◽  
Ángel Gutiérrez Ravelo ◽  
José Juan Marrero Tellado
Keyword(s):  
Low Temperature ◽  
Liquid System ◽  
Ammonium Salts

scholarly journals Instantaneous Low Temperature Gelation by a Multicomponent Organogelator Liquid System Based on Ammonium Salts

2011 ◽  
Vol 133 (48) ◽  
pp. 19559-19559 ◽  
Author(s):  
Daniel García Velázquez ◽  
David Díaz Díaz ◽  
Ángel Gutiérrez Ravelo ◽  
José Juan Marrero Tellado
Keyword(s):  
Low Temperature ◽  
Liquid System ◽  
Ammonium Salts

Proton relaxation by tunnelling in ammonium salts at low temperature

1978 ◽  
Vol 11 (5) ◽  
pp. 997-1009 ◽  
Author(s):  
I Svare ◽  
G Thorkildsen ◽  
H I Andersson ◽  
S M Skjaeveland ◽  
P Trivijitkasem
Keyword(s):  
Low Temperature ◽  
Ammonium Salts ◽  
Proton Relaxation

scholarly journals Low temperature magnetic phase diagram of the cubic non-Fermi liquid system CeIn $\mathsf{_{3-x}}$Sn$\mathsf{_x}$

2004 ◽  
Vol 38 (3) ◽  
pp. 445-450 ◽  
Author(s):  
P. Pedrazzini ◽  
M. Gómez Berisso ◽  
N. Caroca-Canales ◽  
M. Deppe ◽  
C. Geibel ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Low Temperature ◽  
Fermi Liquid ◽  
Magnetic Phase ◽  
Magnetic Phase Diagram ◽  
Liquid System

Low-Temperature Transitions of Some Ammonium Salts

1963 ◽  
pp. 202-209
Author(s):  
M. Stammler ◽  
D. Orcutt ◽  
P. C. Colodny
Keyword(s):  
Low Temperature ◽  
Ammonium Salts

Sethoxydim Response to Spray Carrier Chemical Properties and Environment

1994 ◽  
Vol 8 (3) ◽  
pp. 591-597 ◽  
Author(s):  
John D. Nalewaja ◽  
Robert Matysiak ◽  
Edward Szelezniak
Keyword(s):  
Low Temperature ◽  
Sodium Bicarbonate ◽  
Leaf Surface ◽  
Uv Light ◽  
Chemical Properties ◽  
Ammonium Hydroxide ◽  
Ammonium Salts ◽  
Uv Degradation ◽  
Solution Ph ◽  
Spray Solution

Experiments were conducted to determine the influence of spray carrier salts, UV light, and temperature on sethoxydim phytotoxicity to oat or yellow foxtail. Spray solution pH and ions present were both important to sethoxydim phytotoxicity to oat. Sodium and calcium salts were antagonistic to sethoxydim phytotoxicity only when the spray carrier pH exceeded 7. Ammonium salts and ammonium hydroxide were synergistic with sethoxydim, and the synergism was independent of spray solution pH. Ammonium sulfate, but not ammonium hydroxide, overcame sodium bicarbonate antagonism of sethoxydim. The antagonism of sethoxydim phytotoxicity by sodium bicarbonate was greatest in the presence of UV light and most pronounced when treated plants were exposed to mid-day sunlight. Sodium bicarbonate or low temperature may reduce the speed of sethoxydim absorption allowing for greater UV degradation of unabsorbed sethoxydim on the leaf surface.

Low-Temperature Transitions of Some Ammonium Salts

1962 ◽  
Vol 6 ◽  
pp. 202-209 ◽  
Author(s):  
M. Stammler ◽  
D. Orcutt ◽  
P. C. Colodny
Keyword(s):  
Low Temperature ◽  
Ammonium Chloride ◽  
Ammonium Phosphate ◽  
Polymorphic Transition ◽  
Ammonium Salts ◽  
X Ray Diffraction ◽  
X Ray ◽  
Specimen Holder ◽  
Orthorhombic Modification ◽  
Kinetics Of

AbstractX-ray diffraction studies were performed on ammonium fluoroborate [NH4BF4], ammonium perchlorate [NH4ClO4], ammonium chloride [NH4CI] and ammonium phosphate [(NH4)H2PO4] within a temperature range of ambient to −190°C. For these experiments a specimen holder was designed to effect rapid cooling of the sample. Results indicate that the fluorob orate and perchlorate salts undergo a polymorphic transition at −190°C. The decreasing intensities of the (011) and (112) reflections of the orthorhombic modification indicates a firstorder reaction. No transition was observed when these salts were cooled to −40°C. The ammonium chloride shows a transition at about −30°C which confirms the results obtained by G. H. Goldschmidt and D. G. Hurst. The ammonium phosphate (NH4)H2PO4, which is tetragonal at ambient temperature also undergoes a transition if cooled to −190°C. The kinetics of this reaction are discussed.

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